一种车载设备的电瓶保护方法及其电路

Method and circuit for protecting storage battery of on-board equipment

Abstract

The invention relates to the storage battery protection technology for on-board equipment. The method for protecting a storage battery of the on-board equipment comprises the following steps: setting a turn-off voltage point of the automobile storage battery, namely a lower limit value for power supply voltage of the automobile storage battery; detecting an automobile key signal so as to judge the status of an automobile generator; switching on an automatic low-voltage turn-off function of a storage battery protection circuit when the automobile generator is in a stationary state, and switching off the automatic low-voltage turn-off function of the storage battery protection circuit when the automobile generator is in a working state; detecting the power supply voltage of the automobile storage battery in real time by the storage battery protection circuit; and when the storage battery protection circuit detects that the power supply voltage of the automobile storage battery is lower than the turn-off voltage point of the automobile storage battery, automatically switching off the power supply of the on-board electronic equipment by the storage battery protection circuit. The method for protecting the storage battery of the on-board equipment is applied to protection of a power module of the automobile storage battery.
本发明涉及车载设备的电瓶保护技术。本发明的车载设备的电瓶保护方法,包括以下处理步骤:设置汽车电瓶的关断电压点,即汽车电瓶的供电电压下限值;检测汽车钥匙信号来判断汽车发电机状态;当汽车发电机为静止状态,则开启电瓶保护电路的自动低压关断功能,当汽车发电机为工作状态,则关闭电瓶保护电路的自动低压关断功能;电瓶保护电路对汽车电瓶的供电电压进行实时检测,当检测到汽车电瓶的供电电压低于汽车电瓶的关断电压点,电瓶保护电路则自动切断对车载电子设备的供电。本发明应用于汽车电瓶的电源模块的保护。

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Patent Citations (5)

    Publication numberPublication dateAssigneeTitle
    CN-101888114-ANovember 17, 2010朱光怀Multifunctional power supply of vehicular automotive electronic device
    CN-201444574-UApril 28, 2010印炯;蔺启Automatic power off device for preventing over discharge of automobile storage battery
    CN-201490285-UMay 26, 2010威力能源股份有限公司车用电池装置
    CN-201635901-UNovember 17, 2010联合汽车电子有限公司起动机继电器控制系统及发动机控制器
    CN-202474832-UOctober 03, 2012厦门雅迅网络股份有限公司Storage battery protective circuit for vehicle-mounted device

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